Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Mortgage Debt Outstanding," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "March 1991," Federal Reserve Bulletin (March 1991) : 95-95. https://fraser.stlouisfed.org/title/62/item/20826/toc/236196 , accessed on April 19, 2024.